The invention relates to the technical field of cast steel part finishing devices, in particular to a steel casting moving device. The steel casting moving device comprises racks, a moving base, a pushing air cylinder, an air cylinder base, a driving fixed pulley, a driven fixed pulley, a conveying belt and a fastening mechanism. The racks are composed of a left rack and a right rack. Supporting seats are fixed to the tops of the left rack and the right rack. L-shaped guide rails are fixed to the side portions of the supporting seats correspondingly. Upper and lower clamping wheels and side clamping wheels are fixed to the two sides of the moving base correspondingly and are tightly matched with the upper portions, the lower portions and the side portions of the L-shaped guide rails. By means of the structure of the air cylinder, the problems can be completely overcome. The traveling moving seat is driven by a stepping motor and runs stably. The integral mechanism is very compact, andthe operation is stable.